在 BeagleBone 上启动 Linux 内核时安装 NFS

问题描述 投票：0回答：1

我正在尝试在引导我的 beaglebone 板时挂载 NFS。 我在船上使用以太网 over usb。 我已经完成了这些步骤：

  1. 设置uboot设置：
=> env default -f -a
=> setenv ipaddr 192.168.0.100
=> setenv serverip 192.168.0.1
=> setenv ethact usb_ether
=> setenv usbnet_devaddr f8:dc:7a:00:00:02
=> setenv usbnet_hostaddr f8:dc:7a:00:00:01
=> setenv bootcmd 'tftp 0x81000000 zImage; tftp 0x82000000 am335x-boneblack.dtb; bootz 0x81000000 - 0x82000000'
=> saveenv
  1. 工作站上的设置界面：
nmcli con add type ethernet ifname enxf8dc7a000001 ip4 192.168.0.1/24
  1. 在工作站上设置
    /etc/exports
    文件：
/home/anisyan/proj/learn-embedded-linux/linux-kernel-labs/modules/nfsroot/ 192.168.0.100(rw,no_root_squash,no_subtree_check)
  1. 尝试从 uboot ping 主机（它还活着）：
=> ping 192.168.0.1
using musb-hdrc, OUT ep1out IN ep1in STATUS ep2in
MAC f8:dc:7a:00:00:02
HOST MAC f8:dc:7a:00:00:01
RNDIS ready
musb-hdrc: peripheral reset irq lost!
high speed config #2: 2 mA, Ethernet Gadget, using RNDIS
USB RNDIS network up!
Using usb_ether device
host 192.168.0.1 is alive

但是我不能在uboot中使用

nfs
命令。它产生错误：

=> nfs

Warning: usb_ether using MAC address from ROM
using musb-hdrc, OUT ep1out IN ep1in STATUS ep2in
MAC f8:dc:7a:00:00:02
HOST MAC f8:dc:7a:00:00:01
RNDIS ready
musb-hdrc: peripheral reset irq lost!
high speed config #2: 2 mA, Ethernet Gadget, using RNDIS
USB RNDIS network up!
Using usb_ether device
File transfer via NFS from server 192.168.0.1; our IP address is 192.168.0.100
Filename 'zImage/�zImage'.
Load address: 0x82000000
Loading: *** ERROR: Cannot mount
  1. 设置内核bootargs：
setenv bootargs root=/dev/nfs rw ip=192.168.0.100:::::usb0 console=ttyO0,115200n8 g_ether.dev_addr=f8:dc:7a:00:00:02 g_ether.host_addr=f8:dc:7a:00:00:01 nfsroot=192.168.0.1:/home/anisyan/proj/learn-embedded-linux/linux-kernel-labs/modules/nfsroot/ ,nfsvers=3

我的内核在安装 FS 时产生错误：

------
[    2.545318] omap_i2c 4819c000.i2c: bus 2 rev0.11 at 100 kHz
[    2.570464] hctosys: unable to open rtc device (rtc0)
[  111.202637] VFS: Unable to mount root fs via NFS, trying floppy.
[  111.209241] VFS: Cannot open root device "nfs" or unknown-block(2,0): error -6
[  111.216571] Please append a correct "root=" boot option; here are the available partitions:
[  111.225000] 0100           65536 ram0 
[  111.225004]  (driver?)
[  111.231133] 0101           65536 ram1 
[  111.231135]  (driver?)
[  111.237282] 0102           65536 ram2 
[  111.237284]  (driver?)
[  111.243425] 0103           65536 ram3 
[  111.243427]  (driver?)
[  111.249552] 0104           65536 ram4 
[  111.249554]  (driver?)
[  111.255696] 0105           65536 ram5 
[  111.255698]  (driver?)
[  111.261823] 0106           65536 ram6 
[  111.261825]  (driver?)
[  111.267966] 0107           65536 ram7 
[  111.267968]  (driver?)
[  111.274107] 0108           65536 ram8 
[  111.274110]  (driver?)
[  111.280236] 0109           65536 ram9 
[  111.280239]  (driver?)
[  111.286389] 010a           65536 ram10 
[  111.286392]  (driver?)
[  111.292620] 010b           65536 ram11 
[  111.292622]  (driver?)
[  111.298834] 010c           65536 ram12 
[  111.298836]  (driver?)
[  111.305064] 010d           65536 ram13 
[  111.305066]  (driver?)
[  111.311277] 010e           65536 ram14 
[  111.311280]  (driver?)
[  111.317507] 010f           65536 ram15 
[  111.317510]  (driver?)
[  111.323745] b300        15267840 mmcblk0 
[  111.323749]  driver: mmcblk
[  111.330574]   b301          101376 mmcblk0p1 614bbe6e-01
[  111.330577] 
[  111.337416]   b302        15164416 mmcblk0p2 614bbe6e-02
[  111.337418] 
[  111.344260] b310         3735552 mmcblk1 
[  111.344262]  driver: mmcblk
[  111.351084]   b311         3731456 mmcblk1p1 18ac3061-01
[  111.351086] 
[  111.357929] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)
[  111.366232] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.5.0-rc6 #1
[  111.372435] Hardware name: Generic AM33XX (Flattened Device Tree)
[  111.378595] [<c03128b4>] (unwind_backtrace) from [<c030cb64>] (show_stack+0x10/0x14)
[  111.386385] [<c030cb64>] (show_stack) from [<c0eeaf70>] (dump_stack+0xc0/0xd4)
[  111.393651] [<c0eeaf70>] (dump_stack) from [<c0347d90>] (panic+0x110/0x328)
[  111.400654] [<c0347d90>] (panic) from [<c1601484>] (mount_block_root+0x184/0x234)
[  111.408173] [<c1601484>] (mount_block_root) from [<c160179c>] (mount_root+0x124/0x140)
[  111.416124] [<c160179c>] (mount_root) from [<c1601934>] (prepare_namespace+0x17c/0x1b8)
[  111.424167] [<c1601934>] (prepare_namespace) from [<c0f02c3c>] (kernel_init+0x8/0x10c)
[  111.432122] [<c0f02c3c>] (kernel_init) from [<c03010e8>] (ret_from_fork+0x14/0x2c)
[  111.439721] Exception stack(0xdb0b1fb0 to 0xdb0b1ff8)
[  111.444794] 1fa0:                                     00000000 00000000 00000000 00000000
[  111.453007] 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[  111.461218] 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000
[  111.467876] ---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0) ]---

有人可以帮我吗？

更新： 我可以在帮助下从 uboot 控制台挂载 NFS（仅用于网络测试）

=> nfs 0x81000000 192.168.0.1:/mnt/share/file

然后我在 TFTP 的帮助下下载了我的内核映像和 DTB，并从 uboot 运行

boot
。

我认为内核应该设置 eternet-over-usb 设备然后挂载 nfs。我为此将此标志添加到 kernek 配置中：

CONFIG_USB_GADGET=y
CONFIG_USB_MUSB_HDRC=y
CONFIG_USB_MUSB_GADGET=y
CONFIG_USB_MUSB_DSPS=y
CONFIG_AM335X_PHY_USB=y
CONFIG_USB_ETH=y
CONFIG_ROOT_NFS=y

但是我在启动过程中仍然出错。

linux-kernel beagleboneblack u-boot beagleboard
1个回答
0
投票

我已经解决了这个问题：

  1. 我不应该手动编辑

    .config
    文件。我应该只在帮助
    make menuconfig
    的情况下这样做，因为任何
    CONFIG_*
    标志都可以有一些依赖项。 
    make menuconfig
    可以解决它。

  2. 我们可以在bootargs中显式指向

    init
    程序：

init=/absolete/path/to/init/program
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